Stropping device.



T. J. WILLIAMS.

STROPPING DEVICE. v APPLIeATIoN FILED JAlLze, 1912.

latented May 28, 1912.

T. J.' WILLIAMS.

' lSTROPPING, DEVICE. l 'APPLICATION FILED JAN. 26, 1912.

Patented May 28, 1912.-

2 SHEETS-SHEET 2.

'proveniente in Stropping THOMAS J'. WILLIAMS,

r' carica.

oF HITEMAN,` IOWA.

sirnorrme Dnvrcn.

To all whom it may concern Be it known that I, THOMAS J. WILLIAMS, a citizen of the' United States, residing at Hiteman, in the county of Monroe and State of lonja, have invented new and usefulIm- Devices, of which the following is ay speci cation. f

This invention has reference to stropping devices, and more especially to that type of device wherein the knife or blade to be sharpened is carried by a movable holder which presses its edge against the strop ing element or elements, the movements o the holder serving to present both edges of the' blade to the action of the aforesaid stropping element vor elements.

It comprehends certain improvements, hereinafter described: at length, in or relat-y ing to the'v means whereby thev holder isfheld' in piace in the frame of t-he device andopy'` erated.

- sharpen or strop surgical and other v the line `spective view of the holder;

device; and Fig.

enmg theblades of the so-calledv It is designed primarily.. for use in sharpsafety razors, and has been illustrated in that connect-ionin the accompanying drawing, but` it may obviously be used with equal facility to knives' and various other cutting implements, whose blades are of such a sizeand shape as to admit `of their being inserted in the holder. ln the said drawings, Figure \1 is afront elevation of an embodiment of the inven tion; Fig. 2 is a side elevation thereof; Fig. 3 if a transverse vertical section .taken on 3-3 of Fig. 2; Fig. 4 is a per- Fig. 5 is a horizontal section taken on the line 5-5 `of Fig. 2; Fig. 6 is ari-enlarged perspective lView of the clamp with which `the holder is equipped Fig. 7 is an enlarged vertical'section taken on the line 7 7 of Fig. 1; Fig.8 is a vertical section taken on the line 8-8 of Fig. 7 Fig. 9 is. anenlarged detail view, partly in section, ot' a modifiedl form of operating 10 is atran'sverse sectional view of the holder, showing 'a modified form of clamp employed in connection therewith, v l

The improved device comprises, essentially, a frame wherein the'stropping means mechanism and the blade holder are arranged, and for operatingl said stropping means and, therefrom,- 'said holder. The

frame referred .to is designed for attach-l ',inent in vany'desired manner to a suitable" specificaubn of Letters Patent. l applic-auml med January 2e, 1912.

tained, however,

. provided may be treated Fatented May 28,1912. Serial No. 673,664.

supporting base 9, and consists rear plates l0 and 11 connected by a series of bolts 12. Between these plates is dis-v posed the stropping means which', in the present inst-ance, is constituted by a pair of spaced cylindrical rolls 13 and 14, of ih same diameter, that are mounted upon a pair of parallel shafts 15 and 16 journaled in openingsin said plates and occupying a common horizontal plane. These rolls may either be covered with leather or one of the known honing compositions may bc applied thereto. Shafts 15 and'l project an appreciable distance beyond the front .frame plate and ca ry. intermeshing gears 17 and 18.

To drive tlie stropping rolls, preferably 'provided a ratchet 19, which may be rigidly secured either to the outer face of one of the gears just mentioned, .the gear 17,` for example, or to the shaft 15 whereon that gear is. fixed, and a crank handle 20 which is loosely mounted on shaft l5 and carries a spring-pressed pawl 21 on its inner face, said pawl actively engaging the teeth of the ratchetv when' the handle is turned in. one direction, but slipping over there are 4said teeth on reverse movement of the handle.. This arrangement, therefore, provides for rotation'of the stropping rolls in one direction only. The same result may be obby substituting for the ratchet and pawl construction, just. dcscribed, a pair of coperating toothed clutch members 191 and 192 provided, respectively, upon the gear 17 andthe crank handle` 2U.

and normally held coupled through the agency of aspring 211 posedwithin Ya recess in the sleeved inner end of the handle, as depicted in rlcl'ail in Fig. 9, and encircles the reduced oudl l of shaft 15. are of the same size and, accordingly, cause said rolls to rotate at the saine surface Speed. The covers with which the rolls are in the usualV mani which latter is disner.

The-implement 22 to be sl'iarpcncd, here shown as a safety-razor blade, is supported -in the holder 23, which latter is likewise disposed within the frame andl is adapted t be oscillated during therrotation of 4the vstropping rolls. Holder 23 prefcral'ily consists of a single sheet of spring metal that is folded' 11o`v transversely upon plate-like Jaws 241C rand 25 betweenyvwhich itself `to produce the of front and The two main gearsl and 1S said blade is introduced; these jaws arebent at their junction point, .(z', 1 6., the Afold line o' the sheet), so as to form the cylindrical portion 26 which receives the supporting shaft 27 said shaft being soldered or other- Wise retained in place. The holder is designed to receive blades of different types and sizes,tlie extent to which the blades may he inserted in the holder being determined bv suitable stops, for example horizontal' pins 2S, which are interchangeably engaged in pairs of alining openings 29 formed in the holder jaws, the back of the blade, (or one edge 'thereof double-edged type) pins. other,

contacting with the Said jaws .are Aforced toward each to grip the blade, by a clamp which,

in the present'instance, comprises a vertical spindle 30 revolubly supported by-a pair of straps 31 that are providedone on- ]aw 24 and. the other oncylinder 26, these straps engaging the reduced portions 32 of the At its upper end, the spindle carduced at the lower :end thereof is .providedl with an upstanding eccentrically-loca-ted pin 35 nthat fis inserted through a perforation 36 in the adjacent end of a ton ue 37; said tongue is disposed laterally o and the end wherein the formed rejects through a horizontal slot l '38 in p .ste 24, its other end l extendin through a shorter slotl 89 in plate 25 an carryin a vertical cross-pin 40. It will be seen,r t erefore, that the above described construction and' arrangement of partsl is such as to 'occasion a forward movementfof tongue 37 through'slot 38 when spindle 30 is turned in one direction, thus causing the holder jaws to exert a gripping. action upon the blade, which action may be furthered by .the inner' surfaces j of the jaws `Whlle`1the spindle construction is considered preferable, a simplied'form of clamp vmay be substituted therefor, as .illustrated in Fig. 10, such form consisting ofa short thi-ea ed bolt 301, which is winged head 311 and has its freeV end extending through the threaded opening i'n'a bess 321 formed on plate 25; bolt 301 is to all intents and purposes carried by' plate 24,

since it need not necessarily be completely l detachedffro'm that plate.'

The upper ends of the'rame plates 10 and 'lliare slotted vertically, as shown, the

jaws produced by the. slot in therear plate strnddling the reduced portion or neck at the adjacent endI of shaft 2'"; in the slot in the front plate there is 'loosely mounted a coar 44 which isslotted 5to' receive the reduced and squared front nd45' of said shaft.4 To the said end 45 is secured a spring catch or Afinger 46 that has an aper..

when the blade is of the ture 47v formed therein, which aperture designed to receive a'stud 48 provided u on a vertically-'disposed rocker 49 fastene to collar 44, the 'free end of said catch being bent slightly outward to facilitate the disengagement of the catch from thestud..

The aforesaid slots ir the `slot in collar 44, 'openupwardly, and thus enable the '.holder to be. readily inserted into and withdrawnfr'om position in the frame.

To eect the requisite movement of the holder, there is secured to the inner face of gear 17, or to shaft 15, 'small' gear 50 that meshes with a second small gear 5l loosely mounted upon a stud'- aiiixed toplate 10. Gear 51 meshes, in turn, -with a larger gear 52 mountedsimilarly n the frame plates, and

i preferred, a

thereto and provided with an .eccentricallylocated pin 53 that projects laterally into a longitudinal slot 54 formed in rocker 49. Accordingly, rotation of ear 52 will serve to oscillate rocker 49 an in consequence, the holder, so that the edge of the blade will 4be held first against one of the stropping rolls and then against the other', the pin 53' `exerting a positive and appreciable presedge is in contact with the' periphery ot revolution of the roll.

I claim as my invention: 1. In ,a stropping machine, tion of a frame; a holder `mounted therein; a pair of sharpening rolls mountedv within said frame; means for rotating'said rolls simultaneously connections between one of said rolls and said holder for oscillating the latter, lto

with said rolls alternately.

' 2. In a stropping machine, thefcombination of a frame; a holder 'mounted therein;

apair vot sharpening rollsv mounted within said frame; a rocker connected with said holder; means for rotating said rolls simultaneously in opposite directions; and connections between one of said rolls and said rocker for oscillating the' latter and said holder. f

'tion of a frame; a blade holder and a pair of sharpening rolls mounted therein; a slotted rocker connected with sai'd holder; means for rotating said rolls simultaneously said frameand provided with -a crank pm connectionsbetweenone of saidrolls and late said rockcr'and said holder.

4. In a stropping machine, the'combin'athe combina- 3. In a stropping machine, the coinbinafA projecting into the` slot in said rocker.; andAv said' gear for rotating the latter, to oscil- Y sureagainst the walls of slot 54.. The varithe holder 'perforation 36 is `each roll for slightly more thana complete 1n opposite directions; and

bring the edge. of the blade into contact in opposite directions; a gear mounted upon tion of a frame; a movable blade holder mounted therein and provided with a spring connections between one of said rolls-and Yfor opera-ting said holder and. means foroperating said'member) 5.111 a stropping machine, tlieoombinav tion of a frame; a blade holder and a pairof sharpening rolls mounted therein, said holder being provided with a'spring catch; a rocker with which said 'catch is releasably engaged; means for rotating said rolls'simultaneously in opposite directions; and

.said rocker for oscillating the latter sind seid holder.

6.1n a stropping machine, the combination of a fremeg' a blade holder and it pair of sharpening rollsniounted therein, 'said holder being provided with a spring Catch; a slotted rocker with which said catch is releasably engaged; means for rotating said rolls simultaneously in opposite directions;

:t gear mounted upon said frame -andpr' vided with a'crank pin projecting linto'the` slot in said rocker; and connections between one ofsaid rollsA and said gear" for rotating the latter, to osoillate said rocker 4and said Y holder.

7. In a stroppin'g machine, the combina-i i tion of a frame; a pair of shrpening rolls mounted therein; means for rotating said rolls simultaneously in opposite directions; a rocker pivotally connected to said trama' connections between one of said rolls and said rocker for oscillating the lat-ter; leinde. rocking blade holder mounted in said frame and provided With a spring Catch releasably engaged with said rocker. f

In testimony vwhereof I have hereunto set my hand in presence' of two subscribing Witnesses.

, THOMAS J. WrLmAMs.' Witnesses: Y l

t ELMER Donn, Y MYRTLE WiLIJAMs.. 

